Brake-head.



e. A. BOWMAN & c. L. HARMEYBR.

BRAKE HEAD.

APPLICATION FILED MAY 21, 1908.

Patented 001;.20, 1908.

m" T J N B mam mmw H L w m m B w A e m O E G v WITNESSES:

7&ez'r ATTORNEY UNITED STATES PATENT OFFICE.

GEORGE A. BOWMAN AND CYRUS L. I-IARMEYER, OF FORT WAYNE, INDIANA,ASSIGNORS OI ONE-THIRD TO FRANKLIN B. LADD, OF FORT WAYNE. INDIANA.

BRAKE-HEAD Spcification of Letters Patent.

Patented Oct. 20, 1908.

To all whom it may concern:

the county of Allen and State of Indiana,

have invented a certain new and useful Improvement in Brake Heads, ofwhich the following is a description, reference being had to theaccompanying drawings, in which 1 Figure 1 is an end elevational view ofour improved brake head; Fig. 2, a-front elevational View; Fi 3, a rearelevational view; Fig. 4,an end e evational view of the thrust block;Fig. 5, a front elevational view of the thrust block; Figs. 6 and 7,side andfront' elevational views respectively of one-member of the brakehead; Fig. 8, a side elevational view of a modified formandFig. 9, asectional view of Fig. 8.' A

Our invention relates toa new and useful improvement in brake heads, theobject being to enable them to be readily and quickly removed forrepairs without unhanging the brake beam'or disturbing its tensionmember's. It has been found inpractice that th upper portion, or half,ofthe brake head the part which usually receives the most wear after thebrakeshoe has-broken down, and as a consequence this portion of thebrake head is the part that first requires repairs, and one of theobjects of our invention is to provide a head which shall be divisiblewithin itself sothat when one portion of the head has broken down thatportion can be easily and quickly removed for repairs, 'or a new partsubstituted therefor without the necessity'of disturbing the entirebrake head.

With these objects in view our invention conslsts 1n the novelconstructlon, arrangement and combination of parts'all as hereinaftermore fully described and set forth in the claims.

Referring to the drawings 1 indicates the thrust block provided with asuitable recess 2 in one Sidewhich is adapted to seat one' end of abrake beam 3. An' opening 4 on the opposite side of the block is adaptedto retain the projecting end of thetruss or ten sion member 5, theforward portion of the head having a recess 6 adjacentto said re-' cess2 to permit of the usual angularity ofthe truss with respect to thebeam. A nut 7 on the end-of this truss serves to ti hten the same in thethrust block. In the ont face of the thrust block we provide two or morerecesses or sockets 8 adapted to receive the tenons 9 of the brake head10.

The brake head consists of two similar portions 10, each of which isprovided on its rear face with a tenon or projection 9 and on its outerface with a lug 11. As before stated tenons 9 are adapted to be seatedin recesses 8. Lugs 11 are provided with suitable openings 12 forengaging the usual key which retains the usual brake shoe on the head,the key and shoe not being shown, as they form no part of our invention.

In the forward portion of the thrust block 1 is formed a verticallydisposed opening or keyway indicated by figure 13 in Figs. 4 and 5,through which passes a key 14,, the key also passing through aliningopenings 12' in the tenons 9 on the brake heads 10. An opening in thelower end of key 14 is adapted to receive a cotter pin or ring forretalning the key within the block when the device is inuse. Key 14 thusholds the brake head members tight on thethrustblock at all times. Arecess 15 in the forward face of thrust block 1 is adapted to receivebrake hanger 16 by which the beam and brake are supported from thebolster or other part of thecar. V

.In the modified form shown in Figs. 8 and 9 we provide a recess 17 inan enlargement on the upper and lower portions of the forward portion ofthrust block 1, which recess is adapted to receive hanger .16, as it-isoftentimes advantageous to hang the brake and beam from-the upperportion of the thrust block.

WVe provide recess 17 in the lower portion of the thrust block as wellas in the-upper portion so that the thrust block may be used on eitherend ofthe brake-beam bymere inversion of the same. It is also apparentthat I the enlargements on the thrust block provide additional brace orsupport for the brake head members.

To remove either portion of the brakg.

head it is only necessary to remove the cotte pin. or r ng, drive outkey 14 and remove both portions, or either one, of the brake with it thenecessary parts and make the repairs at-any place on'the road.

It Wlll be seen that no amount of injury'tn tlieln'akeihead can bend orbreak key, 14 so that the latter cannot be removed at all tinles fromthe thrust block. The advantages of that condition will be at onceapparent. It is further apparent-What while the drawings illustrate abeam of U-shape any other form of beam may be used equally well. Allthat it is "necessary to do to adapt the thrust block to seat anyparticular form of beam is to provide the recess 2 in the side of thethrust block with a. suitable form to receive the beam. I

Since the removable members of the head are similar'in constructionthose parts are interchangeable at all times. and if one part 15 injureda new member may be substituted for it or the remaining member may betaken out, substituted for the injured member and a new part-substitutedfor the interchanged member. It is thus seen that great economy in theconstruction and use of the head is achieved. I

What we claim is.

1. A brake head comprising a thrust block provided with a key way oropening therethrough, a divisible and removable head provlded withopenings which register with said ,key way or opening and a key passingthrough said key. way and registering openhead is secured ings wherebythe divisible to the thrust block.

2. A brake head comprising a thrust block provided with a key way oropening therethrough and with two'recesses or sockets intersecting saidkey-way, a divisible and removable head provided with openings whichregister with said key way within said recesses or sockets, and a- 'keypassing through said registering openings-and key way whereby thehead'is secured to, the thrust block.

8. .A brake head comprising a thrust block provided with a key way oropening therethrough and with two recesses or "sockets intersecting saidkey way or opening, a divisible and removable head provided withrearwardly extending tenons or projections having openings therein whichregister within said thrust block with said key way or opening and a keypassing through said key way and openings whereby the head is secured tothethrust block.

4. Ina brake head the combination of 'a thrust block provided with a-key way or opening, a plurality of recesses or sockets intersectingsaid key way or'opening, a removable head comprising two'indep'endentportions each having an opening which registers with said key Way oropening and a key passing through saidkey way and-registermg openingswhereby the several parts of v the head are secured to the thrust block,

5, In a brake head the combination with a thrust block provided with akey way or opening and with recesses or sockets inter- 'secting said keyway or opcinng, of a d1v1srhis and removable head comprising twoindependent portions each provided with a rearwardly extending tenon orprojection which is adapted to jection is provided with an openingi'nalinement with said key way and a key passing throu h said ke wa andahnin oienm' s whereby the several parts'are secured to the are adaptedto receive the brake hanger, 30

said block having also a key way or openlng' therethrough and recessesor sockets intersecti ng said key way or opening, of a removable headhaving two independent and interchangeable portions which are eachprovided with an opening which is in alinement within the thrust blockwith said key way or opening, and a key passing through said key wayoropening and said alining openings whereby the head is secured to thethrust block.

7. In a brake head the combination with a thrust block provided withhanger openngs in the upper and lower portions thereof,

said block and recesses or sockets intersecting said key way or opening,of a removable head consisting of two interchangeable mem bers hav ngopenings therem which are n alinement with said key way or opening and1'00 a key passing through said key way and said aliningopenings wherebythe removable head is secured to the thrust block;

8. A brake head'comprising a thrust block having sockets or recesses inthe forward portion thereof, akey way or opening there-' through and anopening for the brake hanger, a removable .head comprising twointerchangeable members each provided with a rearwardly extending tenonor projection provided with an opening therethrough, and a key, theparts being so arranged and proport-ioned that one member of'said headinay be removed from the thrust block without disturbing the relation ofthe remaining parts one to the others. I i

In witness whereof we hereunto subscribeour names this-18th day of May,1908.

-GEO. a. BOWMAN.

CYRUS L. HAIR-MEYER Witnesses:

ELwiN M. HULsn, HELEN F. GLENN.

supported in one of 70 said recesses or sockets, which tenon or proandhaving a key way or opening through 95

